Bicycle-pedal



No.16l6,48 9. Patented Dec. 27, I898.

R. H. RAMSEY.

BICYCLE PEDAL.

(Application filed Dec. 22, 1897.) (No Model.)

WITNESSES:

QQaO/ M UNIT D STATES PATENT OFFICE.

ROBERT H. RAMSEY, OF PHILADELPHIA, PENNSYLVANIA.

BICYCLE-PEDAL.

SPECIFICATION forming part of Letters Patent No. 616,489, dated December27, 1898. Application filed December 22, 1897 Serial No. 663 ,004. (Nomodel.)

To aZZ whom it may concern:

Be it known that 1, ROBERT H. RAMSEY, a

, citizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new andusefulImprovement in Bicycle-Pedals, which improvement is fully setforth in the following specification and accompanying drawings.

The invention consists in the combination, in a bicycle-pedal, of afixed or reversible antifriction-casing provided with depending ears androughened tread-bolts, foot-rests, or plates, which are screwed orotherwise removably attached to said antifriction-casin g, so as to beeasily detached. A horizontal line drawn from the top of one bolt to thetop of the other passes below the center of revolution ofsaidantifriction-casing, which can be made reversible, so that the bearingsof the antifrictionballs may be changed and the life of the antifrictioncones and balls increased.

On reference to the accompanying sheet of drawings, making part ofthisspecification, Figure 1 represents a perspective view of a pedalembodying my invention, the same being detached from its crank-arm. Fig.2 represents a partial side elevation and partial sectional view takenon line 0000, Fig. 1. Fig. 3 represents a detached view of the screwemployed to secure the pedal to the crank-arm. Fig. 4 represents aviewdof a portion on line 1 y, Fig. 2. Fig. 5 represents a view ofaportion on line 2 2, Fig. 1. 7

Similar letters of reference indicate corresponding parts in the severalviews.

A designates a casing, the same consisting of a frame preferably formedwith an open front and having upon its interior a half-cone B, which ismade either integral with said casing or detachable therefrom, as shownin the present construction, and depending cars a. e

C designates a plate or cap which is adapt-.

through an opening in the back of the easing A. p

In the annular space D, formed by the groove of the half-cones B and Dand head E, are the ball-bearingsD p Said head diminishing slightly inthickness from the point of contact with the head of the stud- G on oneside and the hub F on the other side toward the periphery leaves spacesbetween the head and casingthat will obviate any dragging of the diskfrom lateral motion caused either by wear or loose adjustment.

G designates a stud or similar fastening device which passes through anopening in the .plate 0, and also through'the wheel E and its hub F, andis secured to the crank-arm H, the head of the stud F fitting into thecoun= tersunk seat in the wheel E, thus serving to hold the wheel firmlyin contact with the crank-arm H.

It will be apparent from the foregoing that by making the stud Gseparate from the other elements it can be made to fit a great varietyof threads of different sizes in the crankarms of the various makes ofbicycles now in use and can, by giving the name and date of the bicycle,receive studs G, that will fit any crank-arm, thus overcoming theobjections heretofore existing in adapting a device of r the characterdescribed to existing bicycles.

It will also be noted that by reason of the employment of the shoulderor extension F of the head E an increasing bearing-surface on the stud Gis provided and enables said headto be most firmly secured to thecrankarm of'the bicycle.

It will further be noticed that the cone D, carried by the plate 0, isin the front of the pedal and can be entirely removed 01' adjustedwithout displacing-the pedal from the crankalike; but when the casing Ais reversedthat is, when preferred, facing its plates or caps fromwithin to witl1out--the balls as sume a new rolling and change theirhearing IOO and wearing, which prolongs the life of said casing. It willbe observed that the cone D of the plate or cap 0 can be removedor'adjusted Without displacing the pedal from the crank-arm.

P designates a device employed forlockin g the cone D of the plate 0,the same consisting of a plate secured to the casing A and the samehaving a stud or projection P,Which is adapted to enter any of theopenings H in the plate 0, said openings being engaged by a spanner orother wrench,whereby said plate may be rotated and the cone D thereonadjusted.

J designates a locking device or stud which passes through the casing Aand is adapted to force the plug K, of suitable material, against thethreads of the plate 0, thereby preventing the same from improperrotation.

each tread can be reduced at L to provide a smooth bearing for atoe-clip. Said foot-rests M project from and are screwed into orotherwise mounted within the ears a of the casing A, so that when theroughness at the top is worn away by use the screw and jam-nut N can beloosened, the Worn part turned underneath,and the unused or bottomspikes turned uppermost. A connecting-guard Q joins and braces thefoot-rests M at their outer ends, and screwing into or fixing them tothe easing A, in connection with the jam-nuts N, the tread can belengthened for any sole width.

I claim- A bicycle-pedal consisting of an antifriction-ball casingprovided with depending ears, means for securing said antifriction-ballcasing to the bicycle crank-arm, threaded footrests mounted in saidears, and a link at the opposite ends of said foot-rests to hold themtogether.

ROBERT H. RAMSEY.

Witnesses:

JOHN A. WIEDERSHE-IM, WM. 0. WIEDERSHEIM.

